its time for my motorhome to get some new rubber. i can see dry rot on the tires now so i don't want to wait for anything to happen. what kind of tires should i look for. the size i got now are lt235/85/16's i got a estimate today on gillete, hancook tires and a price for michelin. the micheling's were 500 bucks more 1400 for the michelin's and 940 for the others. what other types should i look for?